On Monday, US officials confirmed that the cyberattack was carried out by North Korea.

In a Wall Street Journal op-ed, Donald Trump's homeland security adviser, Tom Bossert, said, "The attack was widespread and cost billions, and North Korea is directly responsible."

The US has also urged all the affected nations to come together and take a stand against Kim Jong-un's regime.

The op-ed added, “We do not make this allegation lightly. It is based on evidence. We are not alone with our findings, either.”

Bossert is expected to issue a formal statement later in the day.

Meanwhile, the new allegations are expected to draw strong reactions from Pyongyang, the North Korean capital.

It has been critical of the US and is convinced that Trump and his men are directly responsible for disrupting peace in the Korean peninsula.